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Related Experiment Video

Updated: Jun 23, 2026

Three-Dimensional Phase Resolved Functional Lung Magnetic Resonance Imaging

Three-Dimensional Phase Resolved Functional Lung Magnetic Resonance Imaging

Published on: June 21, 2024

Exploratory Assessment of Pulsed-Wave Doppler Representations of Lung Sounds Using Deep Learning: An In-Vitro Phantom

Ali A Saad¹, Sarah B Murthi², Emad M Boctor³

¹Independent Researcher; alumnus of Johns Hopkins University, Baltimore, MD, USA.

Medrxiv : the Preprint Server for Health Sciences

|June 22, 2026

Summary

Pulsed-wave Doppler ultrasound can identify distinct patterns in lung sound recordings. This novel approach shows potential for analyzing respiratory acoustics using portable ultrasound technology.

Related Experiment Videos

Last Updated: Jun 23, 2026

Three-Dimensional Phase Resolved Functional Lung Magnetic Resonance Imaging

Three-Dimensional Phase Resolved Functional Lung Magnetic Resonance Imaging

Published on: June 21, 2024

Area of Science:

Medical Imaging
Acoustics
Biomedical Engineering

Background:

Portable ultrasound systems are becoming more accessible.
Novel methods for respiratory signal assessment are needed.

Purpose of the Study:

To investigate if pulsed-wave (PW) Doppler ultrasound can capture spectral patterns from lung sound recordings.
To explore the potential of PW Doppler ultrasound in respiratory acoustics analysis.

Main Methods:

Digitized respiratory sounds were replayed through an ultrasound phantom.
1,478 PW Doppler spectral images were generated from recordings of healthy and diseased subjects.
A ResNet-18 architecture was used for exploratory classification experiments.

Main Results:

PW Doppler spectral images contained learnable differences under controlled conditions.
The ResNet-18 model demonstrated the ability to differentiate between spectral patterns.
These findings suggest PW Doppler can represent respiratory acoustic characteristics.

Conclusions:

PW Doppler ultrasound shows promise as a method for analyzing respiratory acoustics.
Further research is warranted to explore its clinical applications.
This technique could complement existing respiratory assessment tools.